#include "string.h"

int main()
{
	txp::string s1("hello world");
	cout << s1.c_str() << endl;

	s1.insert(0, 'x');
	cout << s1.c_str() << endl;

	txp::string s2("hello world");
	cout << s2.c_str() << endl;

	s2.insert(6, "xxxx");
	cout << s2.c_str() << endl;

	s2.insert(0, "xxxxxxxxxxxx");
	cout << s2.c_str() << endl;

	return 0;
}